Used and tested YAQIN MC-100B KT88 Push-pull tube amplifier HIFI vacuum tube amplifier. Unit runs and operates as intended. The unit is missing its protective cage that fastens over the tubes.- Transformer use silicon steel and oxygen-free copper, to ensure a clean and strong signal from input to output with no static and an extremely low noise floor.Specifications:Output Power:Ultra-linear: 50Wx2 (8 ohm)Triode state: 25W x2 (8 ohm)Tubes: KT88 x 4, 6n8p(6SN7) x 4 and 12AX7 x 2Input sensitivity: Integrated 0.25V Power 0.6VFrequency: 5Hz~80KHz (-2dB)Signal/Noise Ratio: ?90dBHarmonic Distortion: <1.5%Input impedance: 20KohmConsumption: 300WLoad impedance: 8ohm or 4ohmSignal Inputs Level: >300mvAudio Input: 4 groupsAudio Output: 2 groupsInput impedance: 20KohmColour: Gold Body & Dark GreenSize: 18.5x15x8.2in(Deep x wide x high)?Product weight: about 59lbPackage weight : 66lbInput voltage: 110-120v or 220-240v 50/60hz available.

It is in great working condition. Local pick up only.

Yaqin MC-100C KT88 Bluetooth Integrated Vacuum Tube Power Pure Rear Amplifier Bluetooth 110V-240V KT88 Tube AmpUp for sale is a Yaqin MC-100C KT88 Bluetooth Integrated Vacuum Tube Power Amplifier, suitable for use with 110V-240V power sources. This amplifier is designed with high-quality components that provide crystal-clear sound and an immersive audio experience. With its sleek appearance, this Yaqin MC-100C model is the perfect addition to any home entertainment system. The amplifier features Bluetooth connectivity, allowing you to connect your devices wirelessly and stream your favorite music. It is a great option for audiophiles and home theater enthusiasts who want to enjoy high-quality sound from their favorite music.This is a good looking, great sounding, powerful tube amp with Bluetooth.It can also be used as a power amp via AMP input. Output Power?UL - 55W×2?8??/ TR - 28W×2?8?? Tubes: KT88 * 4, 6N8P/6SN7 * 4, 12AX7 * 2 -------------------------------------------------------------------------- The following description is from the Chinese website... The main factors affect the sound quality of vacuum tube amplifier 1. Single-ended and push-pull circuitAt the end of the power amplification, amplification of push-pull is easier to get high power output, because push-pull is a vacuum tube amplifier + signal, a vacuum tube amplifier - signal, and then superimposed, so large distortion. Single-ended amplifier is a vacuum tube amplifier +, - signal, does not need the signal superposition, therefore less distortion. The sound Single-ended than push-pull good, especially in some minor details. However, Single-ended is difficult to obtain high power output, with vacuum tubes of the same type, Single-ended can do 10W, while push-pull is easy to do 30W, Single-ended to obtain large power will have to pay more price. 2. push-pull end power amplifier of vacuum tube different connectionspush-pull the end of the power amplifying vacuum tube usually have three connections: triode form, super linear form and standard form. Theoretically speaking, the triode form by minimum distortion, output power is minimum; standard form get larger distortion, power is also the maximum; between super linear form between. 3. Affect the power transformer and output transformer of soundHigh quality vacuum tube amplifier inseparable quality transformers, power transformers currently technically no trouble, the output transformer is the decision of the vacuum tube amplifier sound quality is the key. Because regardless of the output transformer selection is good, how sophisticated technology, both methods exist to avoid leakage inductance and stray capacitance components, resulting phase distortion. Output transformer as inductive element, to the transmission signals of different frequencies have different inductance. Therefore, the output of the transformer will be different in different voices lead. No high-quality output transformer, other aspects of the production of better quality vacuum tube amplifier is also meaningless.Protection Function Note:This lamp is used for high voltage delay indication and fault indication when turning on. It is red when you open, turn green in 30 seconds and enter to work. When the machine breaks down(such as the tube is break down or output signal is too large)may damage the machine and speakers, the inner protection circuit will be cutting off the HAVC automatically, red and green light flash alternately, the user needs to shut off the machine and removal of faults, then the user can restart the machine.Bluetooth 5.0 Usage:The machine with a built-in bluetooth of version 4.0. So you can quickly connected the bluetooth device of digital products such as notebook computer, mobile phone and PAD. Realize the wireless transmission of music and enjoy it . Operation method is as follow? 1. Press the “INPUT” button on the panel or the “ ” on the remote to control bluetooth function.2.After hearing blare of the speakers, opened the Bluetooth function of connected digital equipment, and them search“F-3188”and connect it.Parameter:* Output Power?UL55W×2?8??TL28W×2?8??* Frequency Response?5Hz--70KHz?-2dB?* Distortion??0.8% SNR??90dB?A?* Input Sensitivity?Integrated??250mV* Pure post-stage??0.8V* Maximum Power Consumption??390VA* Tube?KT88 x 4 6N8P or 6SN7 x 4 12AX7 x 2Gross* Weight?about 34 kg* Net Weight?about 28 kg Size??W?395mm?D?495mm?H?240mm

YAQIN Vacuum Tube Pre-Main Amplifier MC-100B KT88 Push-Pu Vacuum Tube Pre-Main Amplifier MC-100B ( KT88 push-pull ) This product has been tested for sound output.(Sound is normal from bass to treble.) All inputs and selector positions are normal, and there is no buzzing in the volume. Each vacuum tube lights are also normal.(Please check with the pictures.) Please refrain from turning the power on and off continuously, as this will cause a pop noise. (It may be improved by replacing parts, but we do not know because we have no knowledge about it.) Unlike a transistor amp, this is a vacuum tube amp, so there may be a slight chirping sound when silent. About sound qualityUnlike its flashy appearance, the sound quality is good, and the rough sounding speakers become calm and thick. The sound quality is good, unlike the flashy appearance, and the rough sounding speakers become calm and thicker.In addition, since it is a KT88 push-pull, it has a lot of output power, and I think it will be loud enough except for speakers with a very low performance ratio. I dont think you will be bothered by the lack of output power that is common in vacuum tube amps. Therefore, I personally recommend push-pull amps with more power than single amps.(?All of the above is my personal feeling.) [ International Buyers - Please Note ]Import duties, taxes and charges are not included in the item price or shipping charges.These charges are the buyers responsibility.Please check with your countrys customs office to determine what these additional costs will be prior to bidding/buying.These charges are normally collected by the delivering freight(shipping) company or when you pick the item up - please do not confuse them for additional shipping charges.We do not mark merchandise values below value or mark items as gifts - US and International government regulations prohibit such behavior. [ RETURNS POLICY ]We accept returns for up to 30 days after you have received your purchase.All returns must be in the original condition including tags and packaging.To initiate a return, simply open a return request through eBay by selecting from the drop-down menu next to your order on the Purchase History page.We will provide you with an RMA # and the address to mail the return to once the return request is opened.If you purchase the return label through eBay, we will automatically be notified of the tracking number.However, if you ship it yourself, please add the tracking number to the return portal.Returns are processed within 2 business days of receipt.Refunds will be processed to your original payment method.

YAQIN MC-100B KT88 Vacuum Tube Hi-End Integrated Power Amplifier. Was used for a total of about 50 hours. Works flawlessly - fantastic sound! For local pick up only. Thank you!

YAQIN MC-100B KT88 Vacuum Tube Hi-End Integrated Power Amplifier. Was use for a total of about 100 hours. Works flawlessly!For local pick up only. Thank you! Technical Specifications: Line Voltage:110V - 240V AVAILABLE, set to US Line voltage 110VacOutput PowerUltra-linear: 2x 60W (8 ohm),Triode state: 2x 30W (8 ohm)TubeKT88 x 4; 6N8P x 4; 12AX7B x 2Input sensitivityIntegrated mode 0.25V pure post-stage mode 0.6VFrequency5Hz~70KHz (-2dB)Signal/Noise Ratio?85dB A WeightHarmonic Distortion<0.5%Input impedance20KohmConsumption320WLoad impedance8ohm or 4ohmSignal Inputs Level>300mvAudio InputTAPE,DVD,CD,TUNERAudio Output2 groups

Yaqin MS-90B for sale, like new, purchased in 2023 and less than 50 working hours. Most of the surface still covered by protection films. Upgraded to 211 se amp so would like to sell it. Everything works perfectly and the sound is great while replacing tubes to Gold lion KT88 / Telefunken 12AX7 Please note that 4 power tubes will be replaced to TungSol KT120 YAQIN MS-90B is not only an Integrated Amplifier but also can be used as a Pure Power Amplifier. A major feature addition is the onboard Bluetooth 5.0 receiver. Now you can stream music directly from your mobile phone or tablet to the amplifier set to BT channel, making it a snap to enjoy any streaming service or your stored music. Features & Spec: Onboard Bluetooth, stream music directly from mobile /tablet to the amp set to BT channel Integrated / Pure power amp switchable Triode /UL switchable  Maximum output power: UL55W * 2 (8om) TL28W * 2 (8om) Frequency response: 5Hz - 70KHz (-2dB) Distortion:?0.8% SNR:?90dB Input sensitivity: Integrated Amps?250mV Pure Power Amps?0.8V The maximum power consumption:?390VA Load impedance: 4or8 ohms Tubes: Russian 6H8C * 4, 12AX7 * 2, TungSol KT120 * 4  Gross weight: 34kg Net weight: 28kg

International Buyers are Welcome :contact me to know the transport costs if youre living in de far Europe or outside of EuropePotential import duties are for the buyerRequest Google to be sure that youre looking the right item youre looking for ! ********************************************** Everything in very good condition . Sipping costs 20 for Belgium Luxembourg, Netherlands France & Germanyfor other countries please contact me : this is extremly heavy What you see on the pictures is what youll get.Transport = priority, recorded, tracking & insurance !HD pictures on request ********************************************** Ensemble en très bon étatFrais de port 20€ uniquement pour la Belgique, Luxembourg, Hollande, France & AllemagnePour toute autre destination me contacter avant enchère : cest extrêmement lourd. Ce que vous voyez sur les photos est ce que vous recevrez.Transport = prioritaire, recommandé, numéro de suivi & assurance.Photos hd sur demande

I have owned this amp for almost two years but not currently using it in my set up, I have two other valve amps. This is the most powerful at 60RMS per channel. Even the 25RMS per channel valve amps are ample power for majority of tower speakers. Amp is in good condition, 240v power supply. YAQIN MC-100B KT88 Vacuum Tube Hi-end Integrated Power Amplifier 110v-240v. Product Description: Features: User-selected amplifier modes, UT (Ultra linear) mode provides greater output power and TR (Triode) mode does smooth and rich sound. User-selected pure post-stage and integrated modes; Utilizes the audiophile capacitors and high quality metal precision resistors dedicated for audio frequency; Output transformers manufactured with Japanese silicon steel sheet and oxygen-free enameled copper and high quality lacquer, which offer a wide dynamic range at full rated output; Independent power supply for each channel. Applies special potentiometer as volume controller with low noise, and durable; Beautiful aluminum and steel heavy duty chassis, panel and bezels; Provides user adjustable bias, test points and tool to refine bias of the output tubes. Technical Specifications: Input Power110V - 240V AVAILABLE ? pls let us know your voltage choice ) Output Power Ultra-linear: 2x 60W (8 ohm), Triode state: 2x 30W (8 ohm) TubeKT88 x 4; 6N8P x 4; 12AX7B x 2 Input sensitivityIntegrated mode 0.25V pure post-stage mode 0.6V Frequency5Hz~70KHz (-2dB) Signal/Noise Ratio?85dB A Weight Harmonic Distortion<0.5% Input impedance20Kohm Consumption320W Load impedance8ohm or 4ohm Signal Inputs Level>300mv Audio InputTAPE,DVD,CD,TUNER Audio Output2 groups Input impedance20Kohm ColorGold Body & Dark Green Power Supply Don't miss your chance, just get it now!!! Dimensions: Gross Weight (kg): 29.5kg Net Weight (kg): 25.5kg Machine Size (mm): 465 × 396 × 212 mm Outsourcing Dimensions (mm): 610 × 510 × 365 mm

YAQIN MC-100B KT88x4 60W (8 ohm) Vacuum Hi-End Integrated Power Tube Amplifier. Reluctant to courier but it can be arranged on your side if needed. Includes the multimeter and bias screwdriver, all working as expected. One small nick on the aluminium facia in the left side. Please contact me for any further details. Features: * User-selected amplifier modes, UT (Ultra linear) mode provides greater output power and TR (Triode) mode does smooth and rich sound * User-selected pure post-stage and integrated modes; * Utilizes the audiophile capacitors and high quality metal precision resistors dedicated for audio frequency; * Output transformers manufactured with Japanese silicon steel sheet and oxygen-free enameled copper and high quality lacquer, which offer a wide dynamic range at full rated output? * Independent power supply for each channel? * Applies special potentiometer as volume controller with low noise, and durable; * Beautiful aluminum and steel heavy duty chassis, panel and bezels; * Provides user adjustable bias, test points and tool to refine bias of the output tubes? * YaQin MC-100B can use like a pure power tube amplifier or also an integrated tube amplifier ? * Included metal cover for tubes Parameters: * Output Power: . Ultra-linear: 2x 60W (8 ohm) . Triode state: 2x 30W (8 ohm) * Tubes: Chinese KT88 x 4; SG 6n8p x 4 and 12AX7 x 2 * Input sensitivity: Integrated 0.25V Power 0.6V * Frequency: 5Hz~80KHz (-2dB) * Signal/Noise Ratio: ?90dB * Harmonic Distortion: <1.5% * Input impedance: 20Kohm * Consumption: 300W * Load impedance: 8ohm or 4ohm * Signal Inputs Level: >300mv * Audio Input: 4 groups * Audio Output: 2 groups * Size: 47*38.5*21cm(Deep*wide*high) * Input voltage: 110-240v 50/60hz available